Skeleton frame for armored concrete posts or masts.



C. SALVATIERRA-IRABTE. SKELETON .FRAME FOR A'RMRED CONCRETE POSTS 0RMASTS- APPLICATION FILED JULY-7| |913. l,2l5,872 Patented Feb. 13, 19172 SHEETS-SHEET l.

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, C. SALVATIERRA-IRIARTE. SKELETON FRAME FOR ARMORED coNcRET E POSTS 0RMASTS APPLICATION FILED JULY 7, I9I

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CIPRIANO SALVATIERRA-IRIARTE, OF MADRID, SPAIN.

SKELETON FRAME FOB. ARMGRED CONCRETE POSTS OR MASTS.

To all 'whom t may concern:

Be it known that l, CIPRIANO SALvATniRRa- IRIARTE, a citizen of Spain,residing at 33 Tacometrezo street, Madrid, in the Province of Madrid,Spain, have invented certain new and useful Improvements in SkeletonFrames for Armored Concrete Postsor Masts, of which the following is aspecification.

This invention relates to reinforced concrete or cement posts, poles ormasts intended for use as telegraph and telephone posts or poles and forother purposes. The chief object of said invention is to reduce to aminimum the amount of cement employed in such a structure and thussecure the utmost practicable lightness therein, whileretaining therequisite strength and height. To this end I employ a metallic skeletonon which the cement is molded, said skeleton consisting of two uprightmetallic series 0f parallel rods, which converge upward toward eachother, and inclined transverse openwork plates (or frames) interlockedat their ends with said upright frames and arranged in zigzag fashion.On this skeleton the cement or concrete is molded so as to leavetriangular openings through the completed post or mast from side toside.

My invention consists in the construction and combination of partsconstituting the post or pillar; substantially as set forth.

ln the accompanying drawings:

Figure l represents a vertical longitudinal section of a completed postembodying my invention, the wire-support at the top thereof beingslightly broken away;

Fig. 2, a similar view on an enlarged scale of a part of such a post,the cement on the upright rods being indicated by dotted lines and thecement of the inclined transverse plates being omitted as if not yetapplied;

Fig. 3, in detail plan view, enlarged, one of these transverse openworkplates or frames;

Fig. 4l, a substitute wire frame;

Fig. 5, a front elevation of a part of one of said upright series ofrods corresponding to the part of the post shown in Fig. 2, showing alsoone of the transverse plates or frames, this view being taken at rightangles to the latter figure and drawn on the same scale, the sideborders of the post being indicated by dotted lines;

Fig. 6, a detail elevation, taken from the same point of view as Figs. 1and 2, of parts Specification of Letters Patent.

Patented ir'eb. is, iaia.

Application led July 7, 1913. Serial No. 777,746.

of the upright series of rods and two of the inclined transverse framesillustrating their interlocking Fig. 7, a transverse section on line 7-7of Fig. 3, slightly modified.

Two upright gradually converging frames il, Fig. 5, each composed of aseries of upright rods a., Figs. i, 9., 5 and 6, are connected bytransverse inclined openwork framesor plates Figs. i, 2, 3 and 7, havinga zigzag arrangement, these parts L and b constituting together themetallic skeleton of the pillar or post on which the cement or concreteo is molded. The ends of these plates b are provided with holes c, Fig.3, through which the rods a are passed individually, keeping the latterseparated and completing the skeleton frame. lThe ends of the plates bare then bent over, as shown in Figs. 2 and 3, to make the said platesbind on said rods and fasten them. The metal between the holes of theseopenwork plates may be raised or embossed, as shown in Fig. 7 to holdthe cement more securely and for greaterstrength in the plate. The rodsa of each series are arranged side by side at convenient intervals andconverge upwardly to correspond to the narrowing of the side of thetapering post. The two series of rods also necessarily incline towardeach other conforming to such taper.

The wire frame b having eyes c at its ends for receiving the rods a maybe substituted for the plate or frame Z) with advantage in someinstances.

The zigzag frames or plates b or b constitute connecting and bracingdevices for the two series of upright rods and hold these in place,beside also holding in place and bracing the individual rods a of eachseries. The said connecting devices, with their concrete or cementcovering also form inclined partitions between said openings. The latterare alternately on opposite sides of the central upright line of the twobroader faces of the post or pole. The latter is necessarilyquadrilateral in cross-section as there are several rods a in eachseries and as these are parallel to each other. Preferably the sidescorresponding to these series of rods are not so broad as the othersides of the pillar and are equal in width to each other, giving it theform of an elongated rectangular, quadrilateral parallelogram, thoughthis need not be exact. The quadrilateral form thus reinforced at thesides and transversely on alternately reversed inclined lines isexceedingly strong in its resistance to the sweep of' the wind, and thesaid openings of course lessen the eilect of the latter, beside makingthev pole lighter. The greatest attainable strength, most advantageousbracing action and reduced opposition to the wind are iinportantconsiderations in tall tapering struc` tures often erected in veryexposed places.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

A reinforced tapering concrete pole which is an elongated quadrilateralin cross-section and is crossed by triangular openings through its twolonger sides in regular series at successive points of its heightalternately on opposite sides of a Central line,V

said openings being separated from each other by inclined partitions ofreinforced concrete arranged in zigzag order, the skeleton of said poleconsisting of two upright series of raised parallel rods, said seriestapering' upward toward each other, and a series of inter osedconnectino' devices hav- 25 ing eyes for the individual rods andsupplying the skeletons of said partitions, each of such devices beingadapted to engage at each end all the rods of one upright series and tohold in position and brace each series and 30 CIPRIANOSALVA'llERRA-IRIARTE. llVitnesses Fnnonnioo EsrAAeo, ALFONSO AUsvAINo.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of atents,

Washington, D. C.

